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When the heat flow through until area of a sheet of insulating material of thickness 3.0mm is 8.0kWm-2 the temperature drop across the sheet is 100K. Calculate the thermal conductivity of the material.
A 12.9-g mass is suspended 3.45 cm above a nonconducting flat plate, directly above an embedded charge of q. by how much will the mass be changed
q1. if a thunder clap comes 1.4 s after the lightning strike how far away is the strike? calculating the wavelength and
A crate of mass m = 92 kg is pushed at a constant speed up a frictionless ramp (? = 29°) by a horizontal force . The positive direction of an x axis is up the ramp, and the positive direction of a y axis is perpendicular to the ramp.
question1take two indistinguishable metallic tumblers a and b. insulate one tumbler say a by wrapping chart paper
Find the energy transferred in 1 h by conduction through a concrete wall 2.2 m high, 3.90 m long, and 0.20 m thick if one side of the wall is held at 20°C and the other side is at 5°C
A thin spherical shell of mass 0.25 kg and radius 0.15 m is released from rest from the top of a 3.0-m high ramp. What would the linear speed be at the bottom
Suppose that a 1.00 cm3 box in the shape of a cube is perfectly evacuated, except for a single particle of mass 1.21 10-3 g. Find the average pressure on the other walls
An inductor is connected to a source of sinusoidally varying voltage with constant amplitude and a frequency of 50.0 Hz. what will be the new rms current
The filament of a light bulb has a temperature of 3.48 x 103 °C and radiates 60.0 W of power. The emissivity of the filament is 0.253. Find the surface area of the filament
If a simple pendulum of length 2.09 meters is subjcted to a restoring force of 3 Newtons when displaced .15546 meters from equilibrium, what is the mass of the pendulum
Determine the equation for velocity of the particle as a function of time. Create a graph of velocity vs. time for the particle, for the time interval 0
If you had been tasked to remove the water from New Orleans after Hurricane Katrina would you select a radial flow, mixed flow or axial flow pump for this purpose? Explain it briefly.
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